); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY On Friday 03 August 2007 07:22, Pablo Alvarez Sanchez wrote:
> At CERN we are considering the possibility of using Ethernet as a real > time field bus. There are a couple of projects that have already gone down this road, for one: http://www.rts.uni-hannover.de/rtnet/ Related are, but these are more at the operating system level than the line timing level: http://www.xenomai.org/index.php/Main_Page https://www.rtai.org/ On my assumption that you mean Hard Real Time: Have you looked at FlexRay and/or TTP? Standard communications to be used in the 2008 model year in most cars. Several chips support FlexRay today. Also used in "by-X" controls, like "Fly-by-wire", "break-by-wire" etc. You can get chips for FlexRay from various players today. http://en.wikipedia.org/wiki/Time-Triggered_Protocol http://www.tttech.com/ http://en.wikipedia.org/wiki/FlexRay http://www.flexray.com/ Come to think of it I don't recall ever seeing TTP or FlexRay mentioned here on the Time-Nuts list? They get into things like: "The clock drift must be no more than 0.15% from the reference clock, so the difference between the slowest and the fastest clock in the system is no greater than 0.3%." -- http://www.wearablesmartsensors.com/ http://www.softwaresafety.net/ http://www.designer-iii.com/ http://www.unusualresearch.com/ _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
